Mold for forming bricks or concrete blocks



May 15, 1923.

2 Sheets-Sheet 1 Filed April 4, 1922 6490135615. Qszaalz. I

May 15, 1923. 1,455,222

G. L. OSWALT MOLD FOR FORMING BRICKS OR CONCRETE BLOCKS Filed April 4, 1922 2 Sheets-Sheet 2 Patented May 15, 1923.

GEORGE L. OSWALT, OF CLINTON, INDIANA.

lMOLID FOR FORMING BRICKS R CONCRETE BLOCKS. I

Application filed April-4, 1922. Serial No. 549,568.

To all whom it may Concern:

Be it known that I, Gnonon L. OSWALT, a citizen of the United States, residing at Clinton, in the county of Vermilion and e State of Indiana, have invented certain new and useful Improvements in Molds for Forming Bricks or Concrete Blocks of which the following is a specificatmn.

This invention relates to molds for form- 10 ing concrete blocks or bricks and has for its object the provision of an inexpensive construction, by the use'of which a large number of blocks may be formed ata smgle operation and in which the parts wlll be so arranged that they may be readily disassembled to facilitate removal of the blocks or to be stored in a small compass. The objects of the invention are contained in such a device as is illustrated in the accompanying drawings, and the invention resides in certain novel features which will be particularly pointed out in the claims following'a detailed description.

In the drawings- Figure lis a side elevation of my improved mold arranged upon a truck for transportation Fig. 2 is a transverse section on the line 9r-2 of Fig. l; V

Fig. 3 is a perspective view of one corner of the mold arranged for use; Fig. a is an enlarged detail section showing the manner in which the forms are fitted together; I I

Fig. 5 is a detail perspective view showing the several parts of the mold separated but approximately in their proper relative positions;

Fig. 6 is a View similar to Fig. 5 but lookin at the opposite of the form.

lhe mold is preferably arranged upon a truck 1 which may be of any convenie'ntor preferred form and is employed so that the mold may be readily transferred from the pouring point to the drying point. Upon this truck, I secure the longitudinal supporting rails or sills 2 which are of a step formation in transverse section, thereby providing a ledge 3 and a vertical shoulder 4. At intervals in the ledge 3, I form sockets 5 which are adapted to receive tongues 6 formed at the ends of the transverse partitions 7 which extend between and are supported by the sills and constitute the main length of the mold and closes the side there- I of. At the ends of the sills, I arrange the end plates 9 which have their lower corners resting upon the ledges 3. The partitions 7 and one end plate 9 are each constructed with longitudinal offsets or ribs lOintermediate their upper and lower edges on one face and, in assembling the parts, the said ribs or offsets are all faced in the same direction so that, when concrete is poured into the mold, the resulting blocks will each have a longitudinal groove in one side or face, and may be readily arranged so as to provide air spaces within the wall to prevent the accumulation of moisture. The grooves produced in the blocks will also facilitate handling of the same. For convenience, the face having the ribs will be termed the front face. The rear face of each partition is plane but projecting from said face of each partition and one end plate are division plates 11 which have straight upper and lower edges, but have the rear edge formed with a notch 12 to fit over the rib or offset 10 upon the abutting partition 7. The said division plates will, consequently, fit closely to the several partitions and will avoid the formation of open joints or seams through which the green concrete or other material might seep so that the block formed in each cell or space of the complete mold will be free of blemishes and will have the desired outline. Projecting from the front face of each partition, in the horizontal plane of the lower ends of the division plates are bottom.

just wide enough to snugly receive the lower ends of coactingdivision plates 11 so that when two partitions 7, with the parts carried thereby, are arranged in proper relation, a row of molds will be produced into which green concrete or other plastic material may be poured without loss by seepage. 7

The lower edges of the side plates 8 are held against outward movement under the pressure exerted thereon by the green concrete by reason of their engagement with the vertical shoulders 4 of the sills 2, To further withstand the outward pressure explates 13 separated by spaces 14 which are erted by the concrete, brackets 15 are secured to the, side and the end Plates at the corners oi'the moldfas shown most clearly in Fig. 3, the said brackets being conveniently angularly bent straps secured to the respective plates by bolts or screws. By referring to Fig. 1, it will be noted that the truck projects beyond the ends of the mold and braces 16 are arranged between the. outer extremities of thetruck and the upper brackets. l5 so as to further reinforce the upper. portion ofthe mold and enable it to withstand the pressure exerted therein. These braces advantageously be equipped with turn buckles 17 whereby their effective length may be readily adjusted.

' T be several parts constructed as described are assembled upon the truck in the relative positions indicated in Figs. 4 and 5, and a large number of compartments will thus be producedwithin the outlines of the mold. Mixed concrete is poured into all the compartments and the truck is then shipped to the drying point where the concrete is permitted to set. The partitions and division platesmay be varied in number so as to vary the dimensionsof the finished blocks and the olisets in the partitions may be omitted, if'pre felfred, so, that smooth or plane-faced blocks may be produced. When the blocks have set and are thoroughly hardened, the

several plate s and partitions constituting the mold may be easily withdrawn from about and between theblocks so that the latter may beat once shipped to the point of use. A mold constructed according tomy invention will be light, cheap and easily manipulated. The form consisting of the members 7 11 and 13 is one complete structuife the various members or elements maybe integrally. united or rigidly secured together by brazing or other convenient means." A rib or shoulder 18 may beformed on therear face of each partition 7 and one end. plate 9 toprovide a rest or support for thefree ends of the abutting bottom plates 13.

'It. will, of course, be understood that the offsets or ribs 10 may be omitted andthe transverse partitions 7 may have both faces plane, in which event the notches 12 will be also, omitted and the edges of the division plates will be straight to form close contact with the abutting partition.

Having thus described the invention, what is claimed as new is:

1. A moll for forming blocks comprising a pair of parallel supporting sills, forms comprising partitions disposed transversely between said sills and supported by the same, spaced bottom plates projecting from the front faces of the partitions at the lower edges thereof, division plates projecting from the rearfaces oi the partitions with their lower ends fitting. in the. spaces between meeting bottom plates, and side plates and end plates supported by the sills and closing the sides and ends of the spaces defined by the partitions and the division plates.

2. mold for. forming blocks comprising a pair of parallel sills provided with longitudinal vertical shoulders between their side edges and havin spaced recesses in their upper sides at said shoulders, transverse partitions resting upon and extendingbetween said sills and provided at their ends with depe d t e 9 en g the 'ee ss e' the sills, bottom jfplates between the parti tions, side, plates resting on edge upon; the s ls a a t e shoulders ther on and against the ends ofthe transverse partii ns, nd Plates uppos -eat h ir ds upon the sills and extending between the sills, and fasteninggdevices applied to the outer faces of thefside plates andthe end plates at the junctions of the 3. A form tormolds, comprising a. partition plate, a series of parallel vertical division plates projecting f romone face of partition plate, and aseriesof s tiaced bottom plates proj ecting from the opposite face of the division 191m," the spaces between the bottom plates being alinedwith thedivision plates. l I

A orm. f m lds mp i ne av pa tition plate, a series ofspaced bottom plates projecting from the front face of thepartition plate, a seriesof verticalv parallel di In testimony whereof I affix my signature. 

